Locomotive structure



Aug. 29, 1933. 1 l- ZACH 1,924,175

LOCOMOT IVE STRUCTURE Filed Sept. .17, 1951 2 Sheets-Sheet l l[nyu/11101anni/171,1" 11111111/ 011/11' Aug. 29, 1933. J. J. ZACH LocoMoTIvE STRUCTURE Filed Sept. 17, 1931 2 ASheets-Sheet 2 Patented ug. 29, 1933 vLOCOMOTIVE STRUCTURE Julius J. Zach, Moores, Pa.,` assignor to General Steel Castings Corporation, Granite City, Ill., a Corporation of .Delaware Application' september 17, 1931- f SerlalNo. 563,274

Y Y ie'claims. (01.10.5444) j Y The inventionV relates to railwayV rolling stock and consists in a novel locomotiveunderframe structure and more particularly in4 the main steam cylinder, saddle, supply pipe, and adjacent 5 underframe members of a front unit of a malletV type of'compound locomotive although some of the features described and claimed herein arev not limited to this particular application.`

Previous cylinder structures forfrontunits. of

o l this type of locomotive have usually `been made Y intwofsections Which'arevbolted Vtogether on a verticaland longitudinally extending plane at` the center of the locomotive and are mounted on the locomotive frame. `The steamfromthe I-I. P; cylinders of the rear unitis carried throughea receiver pipe extending longitudinally alongithe center of the front unit and the front end of this pipe is connected to a Y-pipe, thebranches of which are connected to inlet openings in the ways leading to the steam chests, as illustrated A in Locomotive Cyclopedia of 1925,page 541.

Other previous structures have been made con- I Ais illustrated as beingof box section and having sisting of a center section which is secured to the to the center section on each side. `Thereceiver pipe is `connected to a 4separate longitudinally and downwardlyV extending pipe sectionatrthe center of the locomotive, which section in turn is connected to an vinlet opening in the rear wall of the above mentioned center section, for a longitudinally extending .passageway having two branches opening in the topv ofthe center section.` Two separate elbow pipe sections are con- A Ul transversely in opposite directions from each other and connect with corresponding steam chests on each side, all of Vwhich 'is shown in VLocomotive Dictionary of 1916, fig. 588, page 366. 40 The main objects of theinvention are to reducethe amount of fitting and machining pre-` viously required for` similar equipment, to'form a rigid structure having a maximumstrength for,

a minimum weight of material, to avoid unnec- 4,5 essary joints in steam passageways andpthereby eliminate leakage inthe saddleand reduce` mainf e tenance expense,` and to otherwise simplify the structure involved.v This is` accomplished by forming both of the cylinders and corresponding steam chests, the steam lpassageways and the receiver lpipe connections integrally :with each other, thereby eliminating the anges and joints of the previous constructions, and also eliminating the usual Y-pipe` at the rear ofcylinder cast- ,lowing description taken in connection with the rear wall Vof each `cylinder section for passage-` locomotivev frames and separate cylinders bolted nected to the branches at the top andextendA ings in one of the previous types of construction;

and the separate pipesections lbetweenthe reg-v. ceiver pipeandthev steam chests o f Vthe other above mentioned previous construction. Another object isto locate the steam passage#- ways within the cylinder 'structure where the 60 temperature and pressure of the steam'qwill be better maintained.

Other `detail objects will appear from thefoli accompanying drawings ingwhich- Figure `1 is, in part, a topvi'ewof `the cylinder saddle and adjacent underframe portion of a1 locomotive embodying the invention and, in part,

is ahorizontal section taken onv the line 1 1V of Figure 2. j Q70 `Figure 2 is a vertical transverse section taken on theline 2-2 of Figure 1. i f Figure 3 is a vertical longitudinal section tak-A en on the line 3-3 of Figur 1.

,1 Figures ltand V5 are vertical longitudinal sec`75VIN tions taken4 onl the lines 4 4 and'5--5, respec` ltively, of Figure 2.

A portion of the mainframeof the locomotive side wallsfl, atop Wall^2, a bottom VWalll 3,*'and 80 intermediate *verticali walls 4g; Preferably, this' e underframe` is in the form of a one ypiece'casting although this structure is not essential tov the invention. i v y l `The -main steam cylinders 5 are formed inte- 85 grally with the underframe,` each side wally 1y merging with the'inner portion 6 ofv theAcorre--Qv spending cylinder and the top and bottom4 walls f 2 and 3 having lateral extensions, 7 andl also merging with thecylinder walls. Vertical trans- 90 verse webs Sand l0 and suitable reinforcing ribs 11 form `part of the'body portionrof thesaddle structure between the cylinders.

A steam supply pipel2 is `locatedlwith'in thelV f Y l distribution of the I'steam'` to thecylindersv' `5 is 1.00 t

controlled.' i i v i. A

Intermediate each branch `13 and '141V is an Y exhaust steam passageway 16` leadingffrom thef i, steam chest downwardly and:V thenlfupwardly* above the forward portionof supply pipe l2v 'and' 105.

merging 'with `the exhaust steam'lpassageway" fromthe opposite Vcylinder as indicated iat 17,. tol discharge exhaustv -steam ,',thro'ughwthe f ex:

haust nozzle (no t shown) into, thesmokestackf By depressing the passageway as `,.shown,f ithe 11195 y,

YL is supported.

thereof, transverse vertical webs intermediate. the endsY of said members and bracingrsaid cylinders, and a steam supply pipe extending along tu'e; i 3'..V An integral locomotive structure comprising., spaced vsteam control chambers and artrans-` versely extending member connecting said chambers', and having front and rear vertical walls,

vertical path of the discharge `blast is lengthened and consequently the force of the draft is increased.

The rear portion of supply pipe 12 includes as an integral part thereof the outer'packing box '18" of a slip` joint for the separately formed rconduit (notshown) extending to the rear unitl l of the locomotive.

As best shown in Figure 3, member 18 is integral with the transverse web 19 vwhereby thel inner end ofv the supply pipe 12k By forming all voi the parts illustrated in a single casting, steam passageways 13, 14, and 16 form: structural `members extending Vacross the frame and contribute to the sup'pcit ofthe main steam cylinders and steam chests located at the'sides of the trame, Also this structure eliminates the` usual jointed connection between the cylinders and the saddle 'and between, the two halves of the 'saddle with'the resulting requirements of frequent inspection and tightening of the holdingboltssupply conduit from the rear unit; Y

ThepipeV 12 could readily terminate` in a singlek passageway for a piston valve chamberk instead ofthe divided passageway for thefsteam chests shown. r

Various other chang-es Vin the form and details ofv the structure-may be made without defparting from the spirit thereof and I contemplate the 'exclusive use of all such modifications as come: within the scope o theappended claims.

What lis, claimed is:Y 1 In combination, a locomotive main frame member, steam control vchambers-at the sides thereof, transverse vertical-webs intermediate theen'ds of, said-'member and bracing said chambers', andy a steam supplypipe extending along said member and terminating Vin branches extendingl between said webs to vsaid chambers, all

of said parts constituting `van integral structure. 2. YIn combination, a locomotive main frame,VA

member, main steam cylinders at the sides said member terminating inbranches extending between said webs to points above said cylinders, all of said parts constituting an integralstruc- 'thefstructure including` a longitudinally extend- .ing steam supply/passageway located between said chambers and having branches extending transverselyl within Vsa-idmember to said cham-r bers,s aidiwalls merging ,with said branches and bracing .the-same. I Y

Vf4'. An integral locomotive structure compris- -ingspaiced main-steam -cylinders, a connecting'- box shaped-member, and steam control cham-l bers above said cylinders,l the structure including a'steam supply vpassagewaywithin.said mem-'-i ber, said-passageway havingibranche's extend- -ingfwithin said member to said chambers.

a5'.v A Ylocomotive structure 'comprising` V.1a. box

shape'd'body member,r the top andbottom walls of*said'memberV projecting beyond the sidesthereof, Vmain steam cylinders having side wall portions Jintegral with saidtopl 'and .bottom walls,Y

The structure also` eliminates the provision of the usual Y Y pipeV at the ,rear of the saddle forI connection with the and a steam supply pipe .enclosed by said body member with diverging branches integral with the walls of said member and said cylinders.

, 6. An integral locomotive structure comprising spaced 'mainV steam cylinders and a connecting member and steam control 'chambers' `above said cylinders, the structure including a longitudinally extending steam supply passageway, at least a portionr of which is locatedwithin said member, said passageway having spaced l branches each extending-,to the end portions of a corresponding steam control chamber, ther structure also including an yexhaust steam passageway Vextending transversely'finwardly fromv Said chamber and located .between said branches.

'7. In a locomotive structure, main steam cylinders, a longitudinal body Amember having a depressed portion alongside of saidV cylinders,

exhaust steam passageways leading inwardly and downwardly from said depressed'portion to the interior oi. said member and then turning up-j wardly tolformvan exhaustnozzle mounting adj'acentjto the level of the. bottom of said cham-l bers', `and a steam `supply passage withinr said body member and depressed therewithand fhav" ing transversely 'extending upwardly inclined outlets merging vwith said chambers.

8. An integral locomotive structureY comprising spaced main steam cylinders and ay connectirig member and'steam control chambers abovesaid cylinders, thel top of the intermediateportion of the lconnecting member beingv located )at ai lower levelthanthe upper portionrof said control chambers, the structure...includirig a longi-. tudinally extending steam rsupply passageway located Withinlsaid member, said supply pasl sageway-hav'ing branches extending; transversely and upwardly within said member to said cham- "bers, and exhaust steam passagewaysvv extending inwardly and downwardly: from saidfchambers y.steam control chambers above saidk cylinders,r

and then turningupwardly so as to` directv the steam towards the exhaustnozzlel 9. In a locomotive saddle structure, va mai-1i' body.v member, a steam supply pipe enclosed therein and.' extending Y longitudinally thereof, spaced' outlet passageways extending transversev ly of said: pipe, theadjacent vwalls of said pas-'- sageways forming portions of the walls of an Vexhaust.stear'n passageway'between said outlet passageways.- f l. l

10. A locomotive structurel comprising .spaced steam cylinders and aconnecting membensaid structure including ja steam supply'passagewayv enclosedin said member` and extending longitudinally of the locomotive and having spaced' outlet passageways extending.tra'risverselylY of said passageway, the adjacent walls o'f saidpase" sageways forming portions Yof the wallsoil an exhaust Ysteam passageway 'between said outlet passageways.. f -v '11. In a locomotivev saddle structure,v an-iaifi frame member, a steam supply chairiberf` an-y exhaust steam passageway extending inwardly from said chamber through saidYnieniber, arida steamsupply pipeV extending' YlongitiJLdii'iall-yk of said member and beneath said exhaust vsteam passageway and` then b'rarichi-ng'trai-i'svers'elyH tsaid chamber.

12. An integral locomotivestructure co'r'npris-v ing spaced main steam cylinders and-a connecting member and steam control chambers abo'v'e said cylinders; sai-d structure ilicludinglas'teani supply' passageway having a'portion' adapted t pipe, said portion being spaced rearwardly of said structure and said passageway extending longitudinally and. downwardly through said member and within the latter'` and having branches within said member extending transversely and upwardly in opposite directions and connecting with said steam chambers.

13. In combination, a. locomotive saddle structure including front and rear transverse walls, Y a steam supply pipe extending longitudinally of l the locomotive'through said rear wall and terminating in a slip joint member at a point spaced rearwardly or said rear wall,V said pipe being integral with the remainder of the saddle struc,- ture.

14. In a locomotive 4saddle structure, front and rear walls, a steam supply pipe extendingY longitudinally of the locomotive into the space between said walls and having transversely extending branches located between said Walls and Aextending upwardly and.l outwardly from the body of the supply pipe, and transverse vertical ribs extending across said saddle beneath said supply pipe and branches.

15. A box-shaped locomotive main frame member including a plurality of transverse vertical webs intermediate the ends thereofland a Y steam supply pipe enclosed in said memberjand carried by said webs, 16. A locomotive cylinder Y saddle integral structure includingv 'locomotive yunderframe members, main steam cylinders, and a supply steam passageway enclosed by Ksaid members and having lateralrbranches merging with said members and projectingV beyond the latter to merge with portions of said cylinders to assist` in the support thereof.

v17. A locomotive saddle construction comprising in an lintegral casting a main frame member, main steam cylinders outside thereof, supply.

steam passageways and exhaust steam passageways extending from the inside of v'said member to the outside thereof `and forming transverse members of the saddle supporting and bracing said main steam cylinders.

18. A locomotive saddle construction compris-v ing in an integral casting a main frame member, 4supply steam passageways and exhaust steam passageways extending from the insidev of said member to the outside thereof and forming UJLIUS J. ZACH.V

. transverse members of the saddle to support and f brace main steam cylinders. 

